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Diesel Fuel System Contamination Diagnosis and Service ...
Diesel Fuel System Contamination Diagnosis and Service Procedure Job Aid (Revised March, 2012). Fuel Contamination on Diesel engines can damage fuel System components including the High Pressure (HP) fuel injection pump and fuel injectors. Engine operation on fuels and additives that do not meet the lubrication, cooling and anti-corrosion properties required by the HP fuel System components may cause symptoms including, but not limited to, the following: Crank No Start Long Crank/Hard Start Runs Rough Low Power Engine Knocking Exhaust Smoke Fuel Rail Pressure (FRP) slow to build Follow the appropriate Service procedure depending on whether the engine has been started with contaminated fuel, or not. NOTICE: Failure to follow these procedures may result in fuel System and/or engine damage and may require vehicle warranty cancellation submission. Repairs required due to the use of improper fluids and fuel are not covered by the New Vehicle Limited Warranty.
driveability, low fuel pressure on HP and/or LP side Premature HP pump and fuel injector wear, HP or LP pump noise or failure, debris, may have rust/corrosion, decreased efficiency of water separation/plugged filters/ collapsed filters Rust/corrosion as shown in Figures 3-7 due to increased water content, HP pump damage due to
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